Need an easy way to add some low-end muscle into your music? Kenwood's KSC-WD250 powered subwoofer combines a 10" speaker and a 100-watt amplifier into a compact box that won't take up a lot of space.

The box's ported configuration maximizes the subwoofer's output, and the amp's efficient design ensures solid power output without taxing your car's electrical system. A built-in low-pass filter adjusts the bass to fit your vehicle, while the phase switch ensures that the sub is working with the speakers in your car, not against them. This versatile subwoofer will accept a wide range of input signals, so you can hook it up in almost any system.

Product Highlights:

  • compact powered subwoofer
  • 10" polypropylene woofer in ported enclosure
  • Class D 100-watt RMS amplifier (200 watts peak power)
  • wired remote control with level control, phase switch, and low-pass filter controls (19-1/2' cable)
  • selectable low-pass filter (50/80/100/150 Hz)
  • phase control (0-180 degrees)
  • frequency response: 25-1,000 Hz
  • preamp- and speaker-level inputs
  • wiring harness included (19-1/4' power/speaker input cable)
  • fuse rating: 5A x 2
  • 14"W x 13-1/4"H x 14-7/8"D1 x 11-5/8"D2
  • warranty: 1 year
  • Our 60-day money-back guarantee

Who needs a powered subwoofer?

To produce bass, you need a sub, an enclosure, and an amplifier, and it can be little tricky to match them all up. A powered sub eliminates all the hassle, as the manufacturer designs the enclosure to house the sub and amp together. This all-in-one solution is especially useful in smaller vehicles, where there's no room to mount a separate amp, or in any vehicle where you need every bit of cargo space. Powered subs range from small, flat boxes that fit under your seat to larger boxes that go in your trunk.

Kenwood KSC-WD250 Reviews

Average Customer Review:

13 reviews
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still works great

Written By eljorge81005, saint augustine florida on Friday, April 04, 2014

Have had this little sub for aprox 7 years now, and it still works like it did on the day I bought it. Great filling sound, and thats thru 3 different vehicles now.

Pros: Much easier to install than your typical amp.

Cons: Doesn't sound as great if its not in its original enclosure.

Not Bad

Written By Brian, Hayward,Ca on Wednesday, March 26, 2008

Crutchfield Customer Review (What's this?)

Bought this unit as a scratch and dent,totally worth it.Kinda distorts at higher volume but probably just need to adjust the subwoofer level.Not super loud but just perfect for my toyota matrix(this unit not for big vehicles).

Superb Solution

Written By Tom, Fort Worth, TX on Tuesday, February 19, 2008

Crutchfield Customer Review (What's this?)

This is a great solution to add subtle, solid bass to any music! Wiring was very easy, and I was amazed when I first turned it on! I didn't need (or want) the big boomer-type box -- although this one will certainly rattle the windows... I just wanted something that would add some subtle depth, and this box does a superb job!

Great Punch

Written By ChesterMan, North Loup, NE on Monday, June 26, 2006

This subwoofer was exactly what I was looking for. Since it is a powered subwoofer, it has everything in one box, and the price is right. I just wanted a solid bass boost for my car, and this does just that. If you're looking for good, responsive punch then this is it. It is powerful enough to be turned up half way, and put out great bass, distortion free. Excellent!

Kenwood KSC-WD250

Written By Brian, NY, NY on Friday, April 14, 2006

Nice sub. I used this sub in a system I basically designed for many types of music. I put this in in addition to alpine type-r fiber channels all around. When I turn on a rap song or something with alot of bass, this sub can shake my whole car yet it still sounds very clear. It is an awesome sub for the money and extremely easy to hook up. Just remember, you still need RCA cables to hook this up if you wanna hook it to your deck's pre-amp, because the cables that come with this are meant to be tied into the front and rear speakers connections. The amp has a seperate terminal for hooking up your deck's pre-amp. Make sure you get some high quality cables; I got some gold plated shielded RCA's, very thick and I think I made the right decision. This is a great sub, especially and the remote makes it perfect for people who don't want to have it on all the time.

Rounds out the system well

Written By resslera, Colorado Springs CO on Sunday, April 09, 2006

Was looking for a way to add bass to a system that had NO bass (Isuzu Rodeo w/ 4x6s and 5 1/4s). Installation wasn't bad as I used the RCA inputs from my Pioneer head unit. Very decent bass from 1 10" with only a 100 watt amp.

My only problem was with the included wiring. Kenwood tried to make it easy by having an enormous spool of wiring hooked to the side that included the power, L/R speaker inputs, remote turn on and ground. I'd highly prefer if it was like a normal amp where you run your wiring to the amp. I chose to run a 12 gauge from the batt to the amp and leave the wire coiled behind the unit. The reason why is that it would be a pain to run the inlcluded wire with fuses attached through the firewall into the engine compartment. Another thing, power wires and ground wires were very small! Not the way I prefer to wire an amp.

Decent unit, but let me deal with the wiring Kenwood!


Written By IBN, NEWARK, NJ on Tuesday, March 07, 2006

Crutchfield Customer Review (What's this?)


Great value from a 10 inch sub

Written By SalnCammie, Rowlett, TX. on Monday, March 06, 2006

After installing a new deck and door speakers in my Frontier I quickly realized something was missing.Initially I didnt plan on having a sub installed but after switching the stock deck with a Kenwood KDC-MP828 and the 6.5 inch door speakers with a set of Polk DB-650 series speakers, I was so pleased with the sound of that setup that a sub was a must to make the package complete.Like most of us I do not have $$ to burn and already being over on my set budget I found myself searching online for a cheap setup, I knew I wanted the powered sub simply because it seemed so hassle free.I checked reviews for several models knowing that people like you and I, that spend our hard earned money are going to give honest reviews and if its junk well say its junk.I liked the look and reviews of this sub, even though it was a little out of my price range I went ahead and bought it anyway, when you consider your buying the sub, box, amp, and wiring + included remote it doesnt seem so expensive anymore.I am very pleased with this sub-amp combo, for a 10 incher it has a great bass range and really kicks up your system a few notches, I am not a "bass-head" and my music taste varies greatly so I wanted something that would compliment different musical tastes, this sub does the job perfect, and the included remote is a nice touch and very handy, not to mention it has a long thick durable cord not a cheap thin one that would split or tear if you accidently pinched it in the seat, One word of advice make sure you connect the yellow power wires directly to the battery, to avoid shutting of at high volume.A full grill for 100% protection is the only thing that could have been better, A++ Sub.

Kenwood KSC-WD250

Written By Brian, Granville, IL on Sunday, March 05, 2006

I put this sub in a 91 Honda CRX with a Sony head unit and
2 ways in the doors and rear side pilars. I am shocked at how well it sounds. I did not think so much sound coud come out of a sub with a amp that only pulls 10AMPS!!! I was concerned at power usage with only a 60amp
alternator, that is why I tried this. My lights don't even dim sitting at stop lights. The sub is in the hatch and it sounds great making all bass notes clearly! It also included all the wire needed for the install, that was nice.

Nice addition

Written By Dan, Sarasota, Florida on Thursday, January 05, 2006

Installed this in my wifes 2005 Dodge Neon.
Handles nicely for a 10" sub. If your looking for a nice bump, and not ear shattering lows, give this one a try.
This sub is meant for a sub-bass "filler". And it does its job nicely. I also rate its sound quality B, as it can be a little "boomy" on bass drum kicks. (I like a very linear tight bass note myself)

If you want ground pounding, window shattering bass, dont look for a solo 10" sub and expect it to sound like 12 15" subs on 10,000 watts. But if you want a nice compact sub to add life to your music, this one is a great choice.

small sound 4 a small sub

Written By Gary, Philadelphia on Sunday, October 30, 2005

Crutchfield Customer Review (What's this?)

Its ok. had a 12"stolen and this was a replacement, not enough bass. its only a 10" sub, and there is a big difference. "small sound 4 a small sub"

More Than Satisfying

Written By wes, Conway, AR on Friday, September 16, 2005

The following is installed in a 1994 Mazda 626.

ALPINE MRP-F240 4-Channel Amp
PIONEER TS-A6870R 3-Way Speakers (2 Pair)
KENWOOD KSC-WD250 10" Powered Sub

My goal with this system was to create as high-quality of a system as possible for under $1000, and I based most of my decisions on the reviews of others here at Crutchfield's site. Thanks to you all (and esp. Bryce @ Tech Support!!!) for the help, because it came out way better than expected.

The Kenwood head unit is packed with features & gadgets and allows me to run my MP3 player flawlessly thru its AUX Input. NOTE: It powered the Pioneers decently well before my amp, but would distort at high volume. The built-in subwoofer controls and HPF, HPR, & SUB crossovers are invaluable for making on-the-spot adjustments for various music types.

The Alpine amp fixed all distortion from the Pioneers, which now perform incredibly. Together they offer a beautiful balance of mids & highs at all volumes, all while remaining crystal clear. I cut them off at 120Hz and can now blast them to the point of ear-ringing for hours on end without any interference or overheating (the amp is under the driver's seat).

The WD250 handles all below 120Hz, filling the bottom with clean, tight bass. I love that it offers passengers rich bass presence w/o upsetting the neighbors or shaking my car apart; exactly what I desired.

Overall, this system provides me with more than I ever expected. It's CLEAN & LOUD, and all at a killer price point. You won't win any competitions, but if you're looking for a rewarding musical experience that won't break the bank, look no more.

Great For The Money

Written By James, Levittown,PA on Friday, September 16, 2005

Crutchfield Customer Review (What's this?)

Overall Value A+++. Sound Quality B, poor for deep bass and grinding bass, but not too bad as a whole.
I have had a lot of experience with sub systems. I had a JL Audio Class D 500 Watt Mono Amp and 2 JL Audio 12W3 Subs. Then I had a baby, bought an SUV and wanted some bass, but not too much. I was looking for something small, 1 10" sub, a box and an amp for under $400. I also wanted to be able to easily take it in and out of the vehicle. This met my needs completely!!!!! Not too loud, but enough bass for an average sound. Still beats many others!!!

Hands-on research

What's in the box?

Download owner's manual

  • Amplified subwoofer with attached 19.25' power/speaker harness
  • Remote control unit with attached 19.5' cable
  • 4 Metal mounting brackets
  • 1 Strip of self-adhesive Velcro
  • 16 Self-tapping screws
  • Instruction Manual (English/French/Spanish)
  • Warranty Card

Features and Specs

Enclosure Type Ported
Finish Material Carpet
Grille Plastic
Connector Type RCA
Bi-amp Inputs No
Woofer Size (inches) 10
Woofer Material Polypropylene
Passive Radiator None
Width 14"
Height 13-1/4"
Depth 14-7/8"
Second Depth 11-5/8"
Parts Warranty 1 Year
Labor Warranty 1 Year
Frequency Response 25-1000
Amplifier Power (RMS) up to 100 watts
Maximum Wattage 200 watts
Sensitivity N/A
Impedance 1.5 ohms
Second Voice Coil Impedance 1.5 ohms
Crossover Point 50/80/100/150 Hz

Product Research



Product Overview: The KSC-WD250 features a 10" polypropylene cone woofer in a bass-reflex enclosure with a top-firing port. The woofer is powered by a 100-watt RMS Class D amplifier (200 watts peak). A wired remote control unit is supplied for system control.

Low-pass Filter: The built-in low-pass filter can be set to 50, 80, 100, or 150 Hz using the wired remote control.

Gain Control: The remote control has a rotary control for adjusting the level of the bass.

Phase Control: The subwoofer's phase control allows you to adjust the phase of the subwoofer's output relative to the system. If the bass sounds muddy or unclear, adjusting the phase control can sometimes strengthen the bass "attack."

Mounting: Four brackets and self-tapping screws are supplied, allowing you to mount the enclosure to an appropriate flat surface.


Wired Remote Control:

  • Phase: button that allows you to set the subwoofer's phase to 0° or 180°
  • Frequency: rotary control that allows you to set the low-pass filter to 50, 80, 100, or 150 Hz
  • Level: rotary control that allows you to adjust the level of the subwoofer


Left Side of Enclosure:

  • Remote: 6-pin jack for use with the supplied wired remote control
  • Line In: left and right RCA audio jacks
  • Power/Speaker Input: 10-pin jack that connects to the pre-installed power/speaker harness. This harness provides power connections and the speaker-level input leads.
  • Subwoofer Output: 4-pin jack that connects to the pre-installed speaker harness. The harness has two wires that run into the enclosure and connect to the subwoofer. If this harness is unplugged, the woofer will lose all power.

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.